一般圆管涵的纵坡不超过（）。A.0.4% B.2% C.5% D.10%

作者: rantiku 人气: - 评论: 0

问题一般圆管涵的纵坡不超过（）。

选项 A.0.4% B.2% C.5% D.10%

答案 C

解析洞底应有适当的纵坡，其最小值为0.4%，一般不宜大于5%，特别是圆管涵的纵坡不宜过大，以免管壁受急流冲刷。

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